Cab guard



FIG. 1 is a perspective view of a cab guard, showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left-side elevational view thereof, the right-side elevational view being a mirror image thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a top plan view thereof.

The broken lines in FIGS. 1 and 3 depict a logo and form no part of the claimed design. 

I claim the ornamental design for a cab guard, as shown and described. 